Gas-burner.



PATENTED SEPT. 26, 1905.

B. M; GRBBNBAUM.

GAS BURNER.

APPLICATION nun M20. 5, 1904.

WITNESSES:

I INl ENTOI? EDGAR M GREENBAUM.

A TTOHNE Y U ITED STATES PAT-ENT OFFICE.

EDGAR M. GREENBAUM, OF NEW YORK, N Y.

GAS-BURNER.

Specification of Letters Patent. I I

Patented. Sept. 26, 1905.

Application filed December 5 1904. Serial No. 235,427-

- To all whom it may concern.-

Be it known that I, EDGAR M. GREnnBAnM, a citizen of the United States, residingat 1485 Fifth. avenue. in the city, county, and State of NewYork, have invented a new and useful Improvement in Gas-Burners, of which the following is a specification.

My invention relates to an improvement in bases'for Bunsen and incandescent gas burn-- tirely shut off even when the regulating cap or nipple is closed down to its limit.

The accompanying drawings, which form part of this specification, show, in

Figure 1, a sectional side view throughlines' X X of Fig. 2. Fig. 2 is a plan view of Fig. 1 through lines O, the vertical dot-and-dash line showing the adjustable cap removed to the right of said line, so as to expose the shoulder of the base and the conoidal stud.

Fig. 3 is a front view of the thumb-wheel or pinion for operating the adjustable cap, the Bunsen tube being broken away; and Fig. 4

- is a central sectional view of a modification is an adjustable cap provided with a.

thread 11 of the same size and pitch as the male thread 6. This cap has a central hole 12, which, with the stud 9,-regulates the quantity of gas. On the periphery of said cap there are longitudinal ribs or teeth 13. To make this cap cheaply, I prefer to use pinion or gear rod, working the same in a turretla the, as in this manner it can be finished in one operation.

14 is a pinion or thumb wheel, whose teeth 15 mesh with the teeth of the cap. This wheel is also made of gear-rod, and is held in operative position on the tube in any preferred .manner. In Figs. 1, 2, and 3' I show it on a wire 16, which acts as a bearing. The wireis pushed up into a series of inwardly-prometal'of the Bunsen tube, the tube being pierced at 18 for permitting the thumb-Wheel.

14 to project some distance beyond it.

In Fig. 4 I show a modification for supporting the thumb-wheel by means of a staple 19, which is riveted or secured to thetube above and below the said wheel.

20 is an indentation on the conoidal stud for the purpose of permitting a slight escape of gas when the cap 10 is screwed down, thus forming a simple by-pass, so called. It is obvious that instead of this means of providing a by-pass the hole 11 of the cap may have a notch in the Wall, or the stud 9 may be drilled through centrally, as is usual in this class of bases; but I prefer to groove or indent the stud, as it is the cheapest and most practical way of obtaining the desired results.

7 When a by-pass is not desired, the notching or drilling is avoided.

Such being the construction of my improved base, the operation is as follows: When the parts are assembled, as shown in Fig. 1, to regulate the supply of gas to the burner the pinion or thumb wheel 14 is revolved, the ser-. rated surface preventing the finger from slipping. The rotation of this wheel causes the adjustable cap 10 to turn on the male thread, and thereby be raised or lowered, the hole 12 acting with the stud in cutting off or increasing the supply without reducing the pressure. When arranged as a by-pass, the cap is screwed jecting straps 1-7, which are drawn from the down by means of the thumb-wheel to its full and air are almost invariably in an explosive mixture and the concussion resulting from such lighting is destructive "to the chemical ashes of which the mantle is composed.

Nearly all the parts of my improved base can be cheaply made on a monitor or turret lathe, and by reason of the adjustable cap being entirely within the circumference of a Bunsen tube it can be made of a very small diameter. Hence little stock or weight of metal is used, and by reason of its being manipulated by a thumb-wheel, which is always ready for operation, no screw-driver, hair-pin, penoil, or other article foreign to the burner is used.

The several parts can be easily taken apart and cleaned without any tool being required.

Such being my invention, what I desire to secure by Letters Patent is- 1. In a base for Bunsen and similar burners, the base, provided with a superimposed adjustable cap having peripheral teeth, said cap being actuated by a pinion-wheel pivotally supported by said burner, the teeth of said cap meshing with those of said pinion,

. substantially as described.

2. In a base for Bunsen tubes, an adjustable cap rotatively mounted on said base, said cap being entirely Within the circumference of wheel extending beyond the periphery of said tube, substantially .as described.

3. In a base for Bunsen and similar bu rners, a base provided with an upwardly-extending male thread, a conoidal stud supported on a shoulder, perforations through said shoulder, a superimposed adjustable cap rotatively mounted on said male thread, said cap having peripheral longitudinal teeth, in combination with a pinion-wheel whose teeth mesh with the teeth of said cap, and means for supporting said pinion-wheel in contact with said cap, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this lst day of December,

EDGAR M. GREENBAUM. Witnesses:

ALEXANDER S. CAMPBELL, THOS. L. S. WEAVER. 

